GCN Circular 16905
A. von Kienlin (MPE) reports on behalf of the Fermi GBM Team: "At 06:46:20.36 UT on 11 October 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 141011A (trigger 434702783 / 141011282). The trigger resulted in an Autonomous Repoint Request (ARR) that was accepted and the spacecraft slewed to the GBM in-flight location. The on-ground calculated location, using the GBM trigger data, is RA = 254.9, DEC = -8.3 (J2000 degrees, equivalent to 16h 59m, -08d 18'), with an uncertainty of 2.7 degrees (radius, 1-sigma containment, statistical only; there is additionally a systematic error which is currently estimated to be 2 to 3 degrees). The angle from the Fermi LAT boresight is 32 degrees. The GBM light curve consists of a short structured pulse with a duration (T90) of about 0.1 s (50-300 keV). The time-averaged spectrum from T0-0.16 s to T0+0.080 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.50 +/- 0.09 and the cutoff energy, parameterized as Epeak, is 603 (+78/-63)keV The event fluence (10-1000 keV) in this time interval is (1.05 +/- 0.05)E-06 erg/cm^2. The 0.016-sec peak photon flux measured starting from T0-0.16 s in the 10-1000 keV band is 70 +/- 4 ph/s/cm^2. A Band function fits the spectrum equally well with Epeak= 573 (+90/-75) keV, alpha = -0.5 +/- 0.1 and beta = -2.7 (+0.4/-4.2). The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."